Skinny water river boat - Sand and logs

criscolumbus

Cadet
Joined
Jul 8, 2018
Messages
28
I am getting a hankering to build a river boat for skinny water.

Years gone by have had several boats but all my operations previously have been deep water skiing and such. Have had lots of fun on the river growing up and been out of boats messing with airplanes for the last 20 years or so.

Got a pontoon boat about 2 years ago and back on the river all the fun memories came back. forgot what I had been missing.

Fast forward to last year - ended up moving to south Mississippi and now it is too far to go for anything deep such as a large lake or river.

The next better thing I can find available here is the Leaf River. Shallow with sandy bottom with log jams, stumps and such. Watched some videos of air boats and look like fun but WAY to noisy :yell: no way to hold a civilized conversation cruising up the water.:argue:.........The skinny water jet boats look like what I want but with a sandy bottom I would guess I could tear up the jet in few hrs of horsing around.

So.....exhausting most of my hope I see few guys with surface drive long tail and beaver tail rigs go skinny but here again most of the industrial engine setups are pretty noisy and best I see have no reverse which I think I would like.

I noticed a few guys running skinny with a good ole egg beater....

Been thinking about getting a lightweight wide aluminum boat say 60" or more around 16 ft with a hydr. jack plate and building a small tunnel enough to squeeze some water up to the cooling intake and run a surface drive prop on something like 60-90Hp. What else will I need? what is the little wing fins that some guys run on each side of a tunnel setup? will I need to go that far?

How will it fair in the sand when I start dredging the bottom :flame:
 

ahicks

Captain
Joined
Sep 16, 2013
Messages
3,957
Check out the bay boats that are built/set up to run the shallows found along coastal areas of the Gulf. Jack plates are a must. Tunnels, tunnel hulls, and catamarans, in addition to conventional super wide (8') nearly flat bottoms (often aluminum) are all popular plans. Some of these guys are nuts. I've seen boats running well over 50 mph in water I know wasn't more than 12" deep as I had just drifted over it! I've also seen boats towed in missing lower units. Something like that happens, you know that boat stopped fast, so you have to wonder if some occupants didn't end up overboard, and assuming one did end up overboard, and the water was 12" deep, the concern over landing on something not so friendly? Maybe just getting old, but that sounds like a bad plan here....
 

cptbill

Senior Chief Petty Officer
Joined
Oct 6, 2012
Messages
762
Something like the old Penyan tunnel drive they will run in as little as 18" of water(supposedly) only put a stump knocker on the bottom
 

ahicks

Captain
Joined
Sep 16, 2013
Messages
3,957
Yes, just like the old PennYann. They're still using something similar on some of the bay boats, only they're outboard power.
 

criscolumbus

Cadet
Joined
Jul 8, 2018
Messages
28
With a properly setup tunnel Jon boat and a standard outboard, can I repetedly jump a log jam without tearing a lot up? I assume if you can jack it up so the skeg is flush with the bottom of the boat u should do ok.
 

H20Rat

Vice Admiral
Joined
Mar 8, 2009
Messages
5,203
Don't rule out jets... I've run jets for many years, and as long as you aren't trying to use it as a trencher you are fine. I've run on plane in 4-5 inches of water before. Most of my hulls would build up a pressure wave so when you ran in shallow water, the entire boat would pitch forward and lift the pump up a little.

Also take a look at outboard jets.
 

harringtondav

Commander
Joined
May 26, 2018
Messages
2,439
I've seen a few long tail OB boats up on the Miss river in Dubuque IA. The river is plenty deep, so I suspect they're used in stump fields and shallow lakes off the channel. Essentially an air cooled horiz shaft lawn mower motor on a 6' shaft. I don't know the max power these things come in, but those I've seen move along at +- 20 mph.

09e854a3b3d93d99e663c57ac4188c05.jpg
 

ahicks

Captain
Joined
Sep 16, 2013
Messages
3,957
With a properly setup tunnel Jon boat and a standard outboard, can I repetedly jump a log jam without tearing a lot up? I assume if you can jack it up so the skeg is flush with the bottom of the boat u should do ok.

With a set up like that, I don't know how you would get the boat moving fast enough to skip over anything?
 

criscolumbus

Cadet
Joined
Jul 8, 2018
Messages
28
Well.....for better or worse, just hauled off n bought one a them mini jet projects. Will take a while to finish but should be a good start
 
Top